COMPANY HISTORY
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Taisho
- 02.1918
- Established in the former Osaka Shosen Building in front of the Yaesu exit of Tokyo as a lighting power equipment and power transmission and distribution contractor “Yamaka Shokai”.
Showa
- 09.1948
- Changed the trade name to “Yamaka Electric Co., Ltd.”
- 10.1945
- Established Sendai Sales office (currently Tohoku power transmission business headquarters)
- 03.1950
- Japan’s first 275,000 volt transmission line construction begins Hokuriku trunk line construction
- 07.1958
- Established Nagoya Sales Office (currently Chubu Transmission Division)
- 03.1959
- Established Osaka Sales Office (currently Solution Division (Kansai))
- 05.1958
- Received an order for construction of a transmission line between Danimu Saigon in the Republic of South Vietnam at that time, and became the first Japanese electrical contractor to expand overseas.
- 06.1965
- Received an order for TEPCO’s Boso line construction, which attracted attention as Japan’s first 500,000 volt transmission line
- 12.1974
- Received an order for new transmission line construction work for the Mekong River development project in Laos, wiring in Vientiane city, and new construction / expansion / repair of each substation.
- 09.1976
- Received an order from Iran for construction of a transmission line with 12 lines and a total length of 900 km.
- 08.1986
- Received an order for optical fiber construction from a domestic electric power company and promoted technological development for the communication information industry.
- 10.1988
- Received an order for Japan’s first 1 million volt transmission line construction work (Gunma Yamanashi trunk line)
Heisei
- 10.2006
- Continued to receive orders for 1 million volt transmission line construction work (Minami-Iwaki trunk line)
- 02.2007
- Listed on the Japan Securities Dealers Association (currently the JASDAQ market of the Tokyo Stock Exchange) and increased the capital to 742.55 million yen.
- 12.2008
- Established Development Division (currently Electric Power Infrastructure Division)
- 03.1998
- Increased capital to 823.06 million yen
- 05.2006
- Increased capital to 989.66 million yen
- 07.2008
- Established Ishinomaki Sales Office in Ishinomaki City, Miyagi Prefecture
- 02.2009
- Dispatched supervisor to Dar es Salaam, Republic of Tanzania to build transmission lines
- 08.2010
- Established a new equipment center in Zao Town, Miyagi Prefecture
- 02.2012
- Made Tokyo Management Co., Ltd., which operates a building management business, a wholly owned subsidiary
- 12.2012
- Headquarters moved to Toshima-ku, Tokyo
- 08.2013
- Developed “Enark 160”, a tower raising device
- 09.2014
- Concluded a supervisor contract for trunk transmission line construction in Myanmar and implemented construction
- 12.2015
- Received an order for 30 MW large-scale solar construction work from LG CNS Japan Co., Ltd. (Fukushima Prefecture)
- 06.2016
- Received an order from Canadian Solar Project Co., Ltd. for the construction of the Saitama Minano Power Plant, which is a high-difficulty work to be carried out on a steep slope of up to 45 degrees.
- 08.2016
- Obtained a patent right for the tower raising device “Enark 160”
- 08.2017
- Moved Sendai Transmission Business Department (currently Tohoku Transmission Business Headquarters) to the center of Aoba Ward, Sendai City, Miyagi Prefecture.
- 12.2017
- Changed the trade name to “ETS Holdings, Inc.”
- 02.2018
- Concluded a partner contract with the Independence Support Organization for Persons with Disabilities
Reiwa
- 05.2019
- Concluded a business alliance agreement with Navik
- 06.2019
- Completed construction of an extra-high voltage substation that receives 154,000 volts at a 55MW solar power plant (Gifu Prefecture)
- 09.2019
- Moved Kansai Sales Office to Higashikoraibashi, Chuo-ku, Osaka
- 10.2019
- Moved Chubu Transmission Division to Shimizu, Kita-ku, Nagoya City, Aichi Prefecture
- 11.2019
- Completed construction of an extra-high voltage substation that receives 154,000 volts at a 62MW solar power plant (Aichi Prefecture)
- 06.2021
- Venture company from Kyoto University that deals with ecosystem surveys
Business tie-up with Sunlit Seed Rings Co., Ltd. (Kyoto)
- 08.2021
- Acquired a solar power plant (Ukiha City, Fukuoka Prefecture)
- 09.2021
- Made Iwai Kogyo Co., Ltd. a wholly owned subsidiary
- 12.2021
- Made Yuuki Sangyo Co., Ltd. a wholly owned subsidiary
- 02.2022
- 100th anniversary of founding
- 06.2022
- Made Chuo Denki Kensetsu a wholly owned subsidiary
- 10.2024
- Establishment of our company through share transfer
